Now Playing: 05-31-12 Marketplace Morning Report

Irish voters go to the polls today not to elect a president or a leader but to vote on key European bailout measures.With the price of oil below $90 a barrel, some are beginning to wonder at what point does it become unprofitable to drill. Today housing advocacy groups from 22 cities and 17 states are launching a campaign to force the presidential candidates to address the specific topic of foreclosures. Madonna begins her sold out worldwide summer tour today in Israel. But what if you're not Madonna? How do you make money on tour?